Late Wednesday afternoon President-elect Donald Trump officially selected Betsy DeVos to be his education secretary. DeVos is an outspoken advocate of charter schools and school vouchers across the country.

In his statement Trump called DeVos a “brilliant and passionate education advocate” adding that “under her leadership we will reform the U.S. education system and break the bureaucracy that is holding our children back so that we can deliver world-class education and school choice to all families.”

The 58-year-old billionaire philanthropist from Michigan, is known for her leading role as the head of the American Federation for Children, which promotes charter school education.

Charter school advocates are unsure of what to expect from the incoming Trump administration citing vague details on the president-elect’s education plan announced on the campaign trail and website.